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Topic: Does LM2596S module input voltage affect output voltage? (Read 100 times) previous topic - next topic

darth_chikoo

Hi.

I am trying to make a 5v Arduino speedometer for a bicycle. It is powered by a dynamo, that provides dc output.

As I am powering it with a dynamo, I know that the power will vary according to my cycling speed (but always higher than 7v).But however much power there is, I want a constant 5v output. I have considered using a linear voltage regulator but they are too inefficient. But I want to know that if the input voltage varies on a LM2596S buck converter module, will the output voltage also vary?

Thank you.

Paul__B

It is not supposed to!

That is why it is called a "regulator"!  :smiley-roll:


MarkT

In datasheets the "Line regulation" specification is the one saying how much effect the input voltage has
on the output.  This will be a fraction of a percent for most regulators.
[ I DO NOT respond to personal messages, I WILL delete them unread, use the forum please ]

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